Ink



UNITED STATES PATENT OFFICE.

HERMAN KBUSE, OF JERSEY CITY, AND WILLIAM C. KRUSE, or UNION, NEW JERSEY INK.

No Drawing.

()ur invention relates to improvements in ink and has particular reference to an ink 7 more especially adapted for use upon mineograph or other duplicating machines.

()ne of the objects in view is to'produce a mod black ink that will dry rapidly on paper and avoid smudging while at the same time avoiding undue thickening and clogging of the inkupon themachine or stencils While in use. Another important advantage of our ink is that it will not settle in the bottom of the can while standing as other inks where barium sulfate is used as a base. We have found that by using a base of lighter material such as aluminium hydrate, there is no needof shaking the can and the ink is always ready'and in good condition for immediate use. In the use of aluminium hydrate as a base with sulfonated or Turkey red oil, we have also found it prefarable to neutralize the oil so as to remove the alkali or acid therefrom as set forth in our Patent 1309292 and plregarao use what is generally known as 65 Specification of Letters Patent. Patented June 14, 1921 Application filed September 3, 1919. Serial No. 321,325.

We prefer to use about-60 parts of Turkey red oil to about 40 arts glycerin, about 10 parts black lake and about 2% parts brown lake, both on an aluminium hydrate base.

Of course, it will be understood that various'modifications may be made in the ingredients, proportions and compounding without departing from the spirit of the invention as claimed.

We claim:

1. An improved ink comprising an alumina black base, glycerin and Turkey red oil.

2. An improved ink comprising a mixture of alumina black and brown lakes, glycerin and turkey red oil.

3. An ink of the class described comprising about 60parts of Turkey red oil or sulfonated oil, about 40 arts glycerin and about 1% parts of'a mixture of black and grown lakes upon an aluminium hydrate ase.

4. An improved ink comprisin an alumina black base mixed with another 00 or, glycerin,

and neutralized sulfonated oil.

In testimony whereof we hereunto aflix our signatures in the presence of two wit- 60 nesses. v

HERMAN KRUSE. 1 WILLIAM G. KRUSE. J

Witnesses:

J OSEPH BERGMANN, J 01m KRUsE. 

